Matthews is out of the lineup for Tuesday's game against the Twins, Chandler Rome of The Athletic reports.
The 29-year-old has been getting regular playing time in the outfield and occasional action at second base, but he may have a reduced role going forward due to Jake Meyers (oblique) coming off the injured list Tuesday. Matthews had a .751 OPS as of May 8, but he's batting .162 (6-for-37) with no extra-base hits across his past 10 contests.